Irene invested $27,000 in a twelve-year cd bearing 8.0% interest, but needed to withdraw $6,000 after three years. if the cd’s penalty for early withdrawal was eighteen months’ worth of interest on the amount withdrawn, when the cd reached maturity, how much less money did irene earn total than if she had not made her early withdrawal?

D. $5,040

Step-by-step explanation:

Just got it right in the test

since your problem is x^4 = 81, what you have to undeo is the "to the fourth power" part.

the inverse (opposite operation) of "to the fourth power" is "to the fourth root".

  (x^4) ^ ¼   = 81 ^ ¼  

  81 = 3^4     so (3 ^ 4) ^ ¼   =   3 ^ 1   = 3

by hand: (3 ^ 4) ^ ¼   =   3 ^ (4 x ¼) = 3 ^ 1   = 3   (when you take a power to a power, multiply the exponents.)

or, do it by calculator. one way of finding the fourth root is to use ^ (1/4)

step-by-step explanation:

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